/*
 * This file is part of gwt-gantt
 * Copyright (C) 2010  Scottsdale Software LLC
 *
 * gwt-gantt is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/
 */
package com.bradrydzewski.gwtgantt.event;

import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.event.shared.HasHandlers;

public interface HasItemCollapseHandlers<T> extends HasHandlers {
	/**
	 * Adds a {@link ItemCollapseEvent} handler.
	 * 
	 * @param handler
	 *            the handler
	 * @return the registration for the event
	 */
	HandlerRegistration addItemCollapseHandler(ItemCollapseHandler<T> handler);
}
